. Railway mechanical engineer . oes yet, the logicis not clear, and surely is not borne out in practice. Those railroad men who recognized at the start the valueof the oxy-acetylene process and who persistently appliedintelligence and ingenuity to the problems attending its useachieved much success, and to those men much credit is duefor proving beyond argument, by long records of welds in classes of service. They are fundamentally the same. Thediagram for locomotives in shuttle service is different fromthat of the diagram for locomotives in road service in that itprovides for the he
. Railway mechanical engineer . oes yet, the logicis not clear, and surely is not borne out in practice. Those railroad men who recognized at the start the valueof the oxy-acetylene process and who persistently appliedintelligence and ingenuity to the problems attending its useachieved much success, and to those men much credit is duefor proving beyond argument, by long records of welds in classes of service. They are fundamentally the same. Thediagram for locomotives in shuttle service is different fromthat of the diagram for locomotives in road service in that itprovides for the headlight and classification lamps for thetender. The diagram for yard service is different from thediagram for shuttle service in that no dimmer resistance isrequired. The circuits are controlled by single-pole push February, 1919 RAILWAY MECHANICAL ENGINEER 101 button switches which are located on the side of the cabwithin easy reach of the engineer. For road service threeswitches are provided. The top one is the main operating. light are on the main circuit and are always lit wheneverthe circuit is closed. They are wired in parallel so that thefailure of one light will not break the main circuit. The wiring diagram for locomotives in shuttle service issubstantially the same as that for road service with the ex-ception that the main switch is of the one-off, two-off elec-trolier type, in order to require only one dimmer resistance ISKbffChisiftcafi ISHoffOassificahon ^~ Headlight Vcird 5erkice Wiring DJ^gra Fig. 2—Wiring Diagrams for the Three Cla sses of Service switch energizing the entire system. The middle one governsthe circuit to the reading lamp, which is located on the side ofthe cab back of the engineer. The lower switch throws thedimmer resistance in or out as required. This provides avery convenient arrangement and eliminates any possibility
Size: 1562px × 1600px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
